Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Hercules Globular Cluster  ·  M 13  ·  NGC 6205
Hercules Globular Cluster M13 2021, Stephen Heliczer FRAS
Hercules Globular Cluster M13 2021
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Hercules Globular Cluster M13 2021

Hercules Globular Cluster M13 2021, Stephen Heliczer FRAS
Hercules Globular Cluster M13 2021
Powered byPixInsight

Hercules Globular Cluster M13 2021

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Description

The giant Globular Cluster in Hercules, M13. This maginificent jewel-box of very old stars forms part of our Milky Way, approximately 25 thousand ly from earth and contains around a million stars. A globular cluster is a spherical collection of stars very tightly bound by gravity, which gives them high stellar densities toward their centers. Globular clusters tend to be older, more massive, denser, and contain fewer heavy elements than open clusters, a type of star clusters which are generally found in the disks of spiral galaxies.They are fairly common; there are over 150 known in the Milky Way, and they are found in nearly all other galaxies. The distribution of globular clusters in the sky was some of the first evidence that the Sun is far from the center of the Milky Way.

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Hercules Globular Cluster M13 2021, Stephen Heliczer FRAS